Hydraulic winch

Details Hydraulic winch Hydraulic winch

B - Operations, Transporting

66

D

254/97

B66D 1/08 (2006.01)

Patent

CA 1107710

HYDRAULIC WINCH ABSTRACT OF THE DISCLOSURE A rapid reverse winch has a hollow winding drum and a hydraulic motor to a first side of the drum. A drive shaft extends inwardly from the motor and is connected to a primary sun gear near the centre of the drum. A primary internal gear extends about the primary sun gear. There is a primary planet hub between the primary sun gear and the primary internal gear and a plurality of planet gears rotatably mounted on the primary planet hub are in mesh with the primary sun gear and the primary internal gear. A final drive sun gear to a second side of the drum is connected to the primary planet housing. A non-rotatable final drive housing extends about the final sun gear. There is a final drive planet hub between the final drive sun gear and the final drive housing with a plurality of planet gears in mesh with the final drive internal gear and the final drive sun gear. A sprag clutch between the drive shaft and the primary internal gear permits rotation between the drive shaft and the primary internal gear when the motor rotates the drum in a winding-in direction. The clutch non-rota- tably interconnects the primary internal gear and the drive shaft when the drum is rotated in a reeling-out direction opposite to the winding-in direction.

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